Hey, I had this problem. I made sure everything was clean, tried adjusting contacts, and no luck. I changed the new coil for another new coil, still “no atomizer”... I got fed up with it and put it down a bit firmly on the table, base first, only as hard as you might tap a tinny of beer before you crack it open, and it worked! I figure the impact must have knocked the contacts together.
If you try this method, by all means do it gently at first, and give the other advice a try beforehand. Kind of a last resort. It’s funny how new technology still responds to the ‘hit it with a hammer’ technique.